biro
/ˈbaɪ.ɹəʊ/
"biro" is a 4-letter English headword indexed on PlainSpell.
The verdict
“biro” is uncommon English (frequency #64,932 among 4,121 “B” headwords), classed as a noun. The kind of spelling people second-guess.
- #64,932
- frequency rank, English
- 4,121
- “B” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A Biro brand ballpoint pen.
Corpus desk
Index EN-biro · biro · English
biro · rank #64,932 · 0 variants · 0 confusables
- FREQ-RARE #64,932
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,121
- PHOTO-FINISH birdhouse
Nearest frequency peer: birdhouse (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “biro”
Sparse band: bars invert rank so rarer forms read shorter
- Biles
Biles
35,072 corpus weight
- Bina
Bina
35,071 corpus weight
- birdhouse
birdhouse
35,070 corpus weight
- biro
biro
35,069 corpus weight
- birt
birt
35,068 corpus weight
- blotted
blotted
35,066 corpus weight
What this shows Long-tail view: where “biro” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | biro |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈbaɪ.ɹəʊ/ |
| Letters | 4 |
| Frequency rank | #64,932 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “biro” in English
Rare enough to double-check
biro is uncommon English at frequency #64,932 among 4,121 “B” headwords, classed as anoun, transcribed /ˈbaɪ.ɹəʊ/. Rarity is why readers land here mid-draft. 3 senses are on record.
biro has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. This headword has no recorded confusable partner, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: Genericized trademark of BIRO, named after László Bíró, the inventor of the first commercially succesful ballpoint pen. The correct English form is biro, spelled B-I-R-O.
Definition
- 1A Biro brand ballpoint pen.
- 2Any ballpoint pen.
- 3Ink from a ballpoint pen.
Recorded use
Wiktionary examplesThese source excerpts show how biro appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Biro MARKS A TURNING POINT IN THE HISTORY OF Writing "BIRO" is unique: it writes with a ballpoint — a point that never goes wrong, never floods, bends or splutters — a point that rolls your writing on to the paper with effortless ease. "BIRO" ink dries as you write; you cannot smudge it; you need no blotter. […] Retail price 55/- including purchase tax
Frank's Biro taps delicately at the topmost of the little yellow notes.
Etymology
Genericized trademark of BIRO, named after László Bíró, the inventor of the first commercially succesful ballpoint pen.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "biro", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).